Lavatory system



FIG. 1 is a top view of the claimed design;

FIG. 2 is a bottom view of the claimed design;

FIG. 3 is a front view of the claimed design;

FIG. 4 is a back view of the claimed design;

FIG. 5 is a right side view of the claimed design;

FIG. 6 is a left side view of the claimed design; and,

FIG. 7 is a perspective view of the claimed design.

The broken lines are for environmental purposes only and form no part of the claimed design. 

The ornamental design for the lavatory system, as shown and described. 